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Finding the Fourth Proportional to 263,960.64, 395,936.85 and 64,280.70

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Solution

The fourth proportional to 263,960.64, 395,936.85 and 64,280.70 is: 96,420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,960.64 : 395,936.85 = 64,280.70 : x
  2. Step 2: Convert to fraction form
    263,960.64/395,936.85 = 64,280.70/x
  3. Step 3: Cross multiply
    263,960.64x = 395,936.85 × 64,280.70
  4. Step 4: Simplify right side
    263,960.64x = 25,451,097,873.80
  5. Step 5: Solve for x
    x = 25,451,097,873.80/263,960.64
  6. Step 6: Final answer
    x = 96,420.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.